Article comprising a fine-grained metallic material and a polymeric material
First Claim
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1. An article comprising a) a permanent substrate comprising a polymeric material;
- and b) a fine-grained metallic material having an average grain size between 2 nm and 5,000 nm, a thickness between 25 micron and 5 cm, a hardness between 200 VHN and 3,000 VHN, said fine-grained metallic material covering at least a portion of said permanent substrate.
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Abstract
Lightweight articles comprising a polymeric material at least partially coated with a fine-grained metallic material are disclosed. The fine-grained metallic material has an average grain size of 2 nm to 5,000 nm, a thickness between 25 micron and 5 cm, and a hardness between 200 VHN and 3,000 VHN. The lightweight articles are strong and ductile and exhibit high coefficients of restitution and a high stiffness and are particularly suitable for a variety of applications including aerospace and automotive parts, sporting goods, and the like.
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Citations
34 Claims
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1. An article comprising
a) a permanent substrate comprising a polymeric material; - and
b) a fine-grained metallic material having an average grain size between 2 nm and 5,000 nm, a thickness between 25 micron and 5 cm, a hardness between 200 VHN and 3,000 VHN, said fine-grained metallic material covering at least a portion of said permanent substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. An article comprising a fine grained metal coated polymer composite having a yield strength of at least 25 MPa wherein
i. the weight of the fine-grained coating is between 5% and 95% of the total weight of the article; ii. said article containing the fine-grained metallic coating has a torsional or bending stiffness per unit weight improved by at least about 5% when compared to the torque or moment of the same article not containing the metallic coating. - View Dependent Claims (28, 29)
- 30. An article comprising a polymeric material, the surface of which is at least partially coated with a fine-grained metallic material having a grain size of between 2 and 5,000 nm and a yield strength of at least 200 MPa.
Specification